Turpentine and resin extractor.



UNITED STATES arana. OFFICE.

JOHN H. ,CASTONA, OF MOSS POINT, MISSISSIPPI ASSIGNOR TO CASTONA IMPROVED PROCESS 60., OF GULFPORT, MISSISSIPPI, A CORPORATION OF SOUTH DAKOTA.

TUBPE'NTINE AND RESIN 'EXTRACTOR.

Specification ,0! Letters Patent.

Patented Jan. 6, 1914.

Application filed June 15, 1912. Serial No. 703,933.

This invention relates to an extractor for extracting turpentine and resin from resinous woods, the object of the invent onbem to provide an extractor Which is simple 0 construction, permits of the ready'and con- 1 venient introduction of a chargeof wood and-the removal of the residue after extraction, and by means'of which the maternal may be subjected to the action of steam and aosolvent to effect the rapid and thorough separation of all of the available turpentine and resin from the charge.

The invention consists of the features of construction, combination. and arrangement of parts, hereinafter fully described and claimed, reference being had tothe accompanying drawing in which,

Figure 1 is a sld'e elevation of an extractor embodying my invention. Fig. 2 1s a central vertical transverse section of the same. I

Fig. 3 is ahorizontal section on the line 33 of Fig. 2. Fig. 4 is a detail sectionillustrating a feature of construction.

-Referring',to the drawing, 1 designates an extracting cylinderor vessel, normally open at itsupper end, and-provided with spaced im'p'erforato bottom heads 2 and {fa-forming an intervening steam chest or heating chamforated throughout itssides andbottom ortion. 'Thiscage. 7 is adapted tocontam a charge of-suitably comminuted wood to betreated and is of less lengthwand diameter than the cylinder 1. At its upper end the cage 7 is held in: spaced" relatign towthecylinder -1 by a band orring 8, and bolts or screws 9- pass through the cylinder,-cag e,-

and-ring, and detachablysccure theacage in position' The band is arranged sufficiently below the upper edges of the cylinder and cage to form an annular groove or-recess 10 for the reception ofa gasket or packin ring 11 of rubber'orother'suitable-materia By the described arrangement of the cage 7 withln the cylinder 1, an annular interven; mg space 12 is provided for the discharge of the steam and extracted vapors from the wood through the perforated sides and botton of the cage into the space 12, and thence through a vapor discharge pipe 13 having a controlling valve 14 to a suitable condenser, not shown, wherein the vapors are condensed and laced in condition for sub sequent separation. Such arrangement of the cage 7 also provides a coll-ection space or diameter 15 between the perforated 'bottom of said cage and the head 2, which space receives the separated resin drippingfrom the wood. A discharge pipe 16 having a :controlling valve 17 communicates with said space 15,:whereby the resin and any water of condensation which may remain in the cylinder-may bedrawm off. i

After-the cage 7 is filled with a charge of Wood and inserted and secured Within the cylinder 1, the top of the latter is closed by a hinged lid or cover 18, which lid or cover is provided with-peripheral notches or re cesses 19 to receive locking bolts 20 hin ed to the body of th-e'vessel 1- and provide with wing nuts 21 whereby the cover may be firmly clamped in position. Extending through the lid or cover is a pipe 22, having I a' controlling valve 23, and which is con nected below the lid with a perforated spray pipe or coil 23, through-which ahydrocarbon or other sol-vent may be introduced into the cage and sprayed upon the wood so that it will-percolate by gravity therethrough, to

take up theivolatile constituents of the wood not drivenoff by the heat.

- Arranged centrally within: the cage :7-.and

fixed at its lower end to the bottom-thereof.

is aperforated steam supply pipe Zetywhich terminatesjustbelow the uppervend of the cage and is rovided at its upper and. lower ends with plugs or other suitable closures 25, whereby the steam supplied to: said" pipe. will be caused to dischargelaterally through the 1 erforations thereinsoas to be uniform y and' eVcnlys distributed throughout the mass of the wood.

:Anranged on :opposite sides-ofthcexrtractor are supporting brackets or standards 26 and 27 having bearin bushings 28and 29 in whichare journale --the outer ends of pipes 30- and 31. These bushings: also receive steam supply'pipes 32 and 33crespec1 tively provided with controlling valves 34 and 35, said pipes being in respective communication with the pipes 30 and 31. The pipe 31 extends downwardly through the space 12 between the cylinder and cage and has its lower end 36 extending through the head 2 into the chamber 4 for the supply of V steam thereto, while the pipe 31 extends across one side of the cage and communicates at its inner end with the vertical steam supply pipe 24. The extractor is adapted to be tilted-from a vertical to a horizontal position and vice versa, on the outer ends of the pipes 30 and 31, acting as trunnions journaled in the bearing bushings 28 and 29, for convenience in filling and emptying the cage and inserting and removing different cages as occasion requires. This permits the cage which has been in use to be removed with the residuum and a filled cage to be inserted in itsplace, with greater economy of time and labor in extracting the constituents from successive charges of the material. Fixed to one of the bearing bushings is a sprocket wheel 36 connected by a chain 37 with the sprocket pinion 38 on the shaft 39, to which may be. applied a crank handle or other suit able operating device, whereby the. extractor may be conveniently tilted.

In operation, the cage 7, filled with a charge of comminuted wood, is inserted and secured within the cylinder 1, and the lid or cover 18 applied to hermetically seal the same. The valve 35 is then opened for the admission of steam through the pipe 31 into the perforated pipe 24, which steam is diffused b said pipe 24 evenly throughout the mass 0 wood, thus heating it to a high degree and driving off the volatile constituents which pass with the steam outward through the perforated walls of the cage into the s aces 12 and 13. The volatile constituents ischarging with the steam are allowed to escape through the pipe 13, the valve 14 of which is opened at a proper period after the device is'set-in operation, while the resin drips through the perforated bottom of the ca e into the collection space or chamber 15. A ter all the constituents of the wood which may be extracted by the action of steam, are

driven off, the valve 23 is opened for the admission of a volatile hydro-carbon through the vapor-23, such solvent percolating downward through the mass ofwood and extracting the remaining volatile constituents thereof, and finally being flashed into vapor therewith by the heat of the mass, the vapors discharging through the pipe 13 to a con-.

denser, as hereinbefore described. After the extraction of the remaining volatile cons'tituents of the wood by the solvent, the valve. 34 is opened and steam is admitted throu h the pipe 30 into the chamber 4, where y thebottom of the extractor is heated and the resin maintained in a liquid state for ready recovery and discharge through the outlet 16. At the same time this steam admitted into the chamber 4 superheats the chamber 15 and a due proportion of the heat is transmitted to the body of wood, whereby the proportion of solvent remaining in a liquid condition in the wood is vaporized and driven off. Duringthis operation of admitting steam to the chamber 4, the valve 6 may be left slightl open for the sole escape of steam through the pipe 5, thus keeping up a supply of steam to said chamber to maintain a desired degree of heat and prevent condensation of steam therein. Any water resulting, however, from the condensation of any portion of the steam during the last' stage of the extracting operation may be withdrawn throu h said pipe 5, as will be readily understoo Preferably the ipe sections 32 and 33 are rigidly connected y a union 41 fixed to a main steam supply pipe 42, so that said pipes will be held from mot ion when the extractor is tilted.

From the foregoing description, it will.

be seen that my invention provides an extractor of simple construction, by which steam may first be employed to extract a large proportion of the volatile constituents, and a solvent then employed to extract the remainder of the constituents which cannot be extracted by the steam, and that the solvent may finally be driven off by steam admitted into the bottom chamber 4, whereby all of the available turpentine, resin, and other volatile constituents will be extracted in a simple economical manner.

At the end of the extracting operation, the extractor may be tilted to a horizontal position for the convenient 'removal of the waste matter and insertion of a new charge to be treated, so that the operation of treating successive charges of wood may be carraied out in a practically continuous manner.

By the use of steam anda solvent, the volatile constituents of the wood are obtained in a highly pure condition, and may be readily and conveniently separated from the water of condensation and the solvent, so that the latter may be used over and over again.

Having thus fully described the invention what is claimed as new is 4 1. A turpentine and resin extractor comprising a cylinder having a heating chamber at its base provided with a valve outlet, a perforated cage disposed within said cylinder and arranged in spaced relation thereto, to provide a surrounding space for the connected with said vertical pipe, and a steam supply pipe leading laterally into the vapor discharge space and extending downward and communicating at its lower end with the heating chamber.

2. A turpentine and resin extractor comprising a cylinder having spaced bottom heads forming a heating chamber provided with a valved outlet, trunnions at diametrically opposite sides of the cylinder, :1 perforated cage arranged within said cylinder and spaced therefrom to provide a surrounding vapor discharge space and a bottom resin collecting space, valved out-lets communicating with said spaces, a perforated pipe arranged vertically within the cage, a

solvent supply pipe arranged within the top I of the cage, steam supply pipes communicating respectively with the heating chamber and perforated vertical pipe, said steam supply pipes having end portions projecting outwardly at diametrically opposite sides of the cylinder through said trunnions, supporting hearings in which said trunnions are journaled, and valved steam conducting pipes extending into said bearings and communicating with said steam 'supply pipes.

3. A turpentine and resin extractor comprising a cylinder having a heating chamber at the bottom thereof, said heating chamber being provided with a valved outlet, a perforated cage disposed Within the cylinder and spaced therefrom to provide a surrounding vapor discharge space and a bottom resin collecting space, said spaces having valved outlets, a vertical steam pipe disposed within the cage, hearings in which the cage is pivoted to tilt, conducting pipes leading through said bearings and communicating respectively with the heating chamber and perforated pipe, valved supply pipes communicating with said conducting pipes, a union connecting said supply pipes anda main supply pipe connected with the union.

4. A turpentine and resin extractor comprising supporting bearings, a cylinder mounted upon horizontal axes to tilt upon said supporting bearings, said cylinder being provided with a heating chamber at its bottom having a valved outlet, a perforated cage disposed within the cylinder and spaced therefrom to provide a surrounding vapor discharge space and a bottom resin collecting space, said spaces having valved outlets, a vertical perforated pipe disposed within the cylinder, and steam supply pipes extending through the respective axes of the cylinder and communicating with the heating chamber and perforated pipe.

In testimon whereof I affix my signature in presence 0 two witnesses.

JOHN H. CASTONA. Witnesses:

FRANK LINDNER, W. E. THOMAS. 

